Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Hydrolysis:

The hydrolysis study was waived as the study could not be performed in view of the low water solubility (<0.01 mg/L).

Biodegradation:

Based on the results of the study according to OECD 301B using the CO2 evolution method, the registered substance did not show any inherent biodegradation and was therfore considerd to be not readily biodegradable under the conditions of the test. Even though no biodegradation has been observed, it cannot be disproved beyond reasonable doubt that the substance is not readily biodegradable as lack of biodegradation observed in the biodegradation test may be due to lack of bioavailability due to the poor water solubility of the substance. The registered substance is made to function as an anti-oxidant. It can thus be argued that the substance may abiotically degrade in the environment. However, its transformation products have not been assessed, so no definite conclusions can be drawn at the moment and further screening tests to fully understand the biodegradation of the test material and its main components are needed.

Bioaccumulation:

A BMF of 0.29533 and an estimated BCF of 4801.9 resulted as key values following an experimental guideline study (OECD 305 -III) with rainbow trout (Oncorhynchus mykiss). As supporting information the BCF, BAF and Biotransformation Half-Life of Type A (n = 1) and Type B (n = 1), representing the main constituents of the registered substance, were calculated by the QSAR

model BCFBAF v3.01 implemented in EPIWIN v4.1. A BCF of 733 L/kg and a BCF of 2420 L/kg resulted as main values for the major constituents Type A (n = 1) and Type B (n = 1). The predictions are within the applicability domain of the model.

Accordingly it can be concluded that Phenol, 4-methyl-, reaction products with dicyclopentadiene and isobutylene have a bioaccumulative potential.

Transport and distribution:

The experimental log Koc of Phenol, 4-methyl-, reaction products with dicyclopentadiene and isobutylene is higher than 5.63 (the value for the reference substance 2,4-DDT).